Question

Two particles are on a spinning disk. Particle A is 12 cm away from the center, while particle B is 15 cm away from the center. If it takes 6 seconds to make a rotation, what is the linear velocity of each particle, in centimeters per second?

Select the correct answer below:


Linear velocity of particle A is 2 cm/sec, and particle B is 2.5 cm/sec.

Linear velocity of particle A is 2π cm/sec, and particle B is 5π2 cm/sec.

Linear velocity of particle A is 4 cm/sec, and particle B is 5 cm/sec.

Linear velocity of particle A is 4π cm/sec, and particle B is 5π cm/sec.

Answer 1

Explanation:

circumference for A=2π×12=24π

linear velocity=24π÷6=4π cm/sec

circumference for B=2π×15=30π

linear velocity=30π÷6=5π cm/sec